Im with Verizon currently, but keep eyeballing the plan changes and promotions of T-Mobile and At&T. If T-Mobile can get their infrastructure up so the coverage is better, they are looking more appealing everyday. For now though, I am happy on Verizon with my LG G3.
Telus, rarely any issues and excellent grandfathered data plans. Been with them since day one and no chance I'd ever leave. Very cool drone I might add.